java 调用 Python

骑猪看日落 2023-06-19 04:27 2阅读 0赞

需求如题

依赖：

<dependency>
        <groupId>org.python</groupId>
        <artifactId>jython-standalone</artifactId>
        <version>2.7.1</version>
    </dependency>
    <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.6</version>
    </dependency>

Python 脚本文件：

# -*- coding: utf-8 -*-
    import json
    
    my_json = '{"ip":"10.111.32.115","nio":"1234","persion":{"addr":"北京","age":18,"name":"张三"}}'
    
    my_json_object = json.loads(my_json)
    
    print(my_json_object['nio'])
    print(my_json_object['persion']['name'])

代码：

import org.apache.commons.io.FileUtils;
    import org.python.core.Py;
    import org.python.core.PyString;
    import org.python.util.PythonInterpreter;
    
    import java.io.File;
    import java.io.IOException;
    
    /**
     *  java 调用 Python 测试
     *
     * Created by c.z on 2019/12/3. */
    public class JPythonTest {
    
    
        public static void main(String[] args) throws IOException {
            String pyStr = FileUtils.readFileToString(new File( "E:\\tmp\\stu01.py"),"utf-8");
            PyString pyString = Py.newStringUTF8(pyStr);
            PythonInterpreter pyInterp = new PythonInterpreter();
            pyInterp.exec("print('Hello Python World!')");
            pyInterp.exec(pyString);
        }
    }

输出结果：

Hello Python World!
    1234
    ����

成长的路总是这么坎坷，乱码总会相逢，一个恶心人的顽疾！

解决：

import org.apache.commons.io.FileUtils;
    import org.python.core.Py;
    import org.python.core.PyString;
    import org.python.util.PythonInterpreter;
    
    import java.io.File;
    import java.io.IOException;
    import java.util.Properties;
    
    /**
     *  java 调用 Python 测试
     *
     * Created by c.z on 2019/12/3. */
    public class JPythonTest {
    
    
        public static void main(String[] args) throws IOException {
            Properties props = new Properties();
            props.put("python.console.encoding", "UTF-8");
            Properties preprops = System.getProperties();
            PythonInterpreter.initialize(preprops, props, new String[0]);
            String pyStr = FileUtils.readFileToString(new File( "E:\\tmp\\stu01.py"),"utf-8");
            PyString pyString = Py.newStringUTF8(pyStr);
            PythonInterpreter pyInterp = new PythonInterpreter();
            pyInterp.exec("print('Hello Python World!')");
            pyInterp.exec(pyString);
        }
    }

真爱，总是难相逢：

Hello Python World!
    1234
    张三

写的复杂了，看了别人瞎写，走了弯路：

import org.apache.commons.io.FileUtils;
    import org.python.core.Py;
    import org.python.core.PyString;
    import org.python.util.PythonInterpreter;
    
    import java.io.File;
    import java.io.IOException;
    import java.util.Properties;
    
    /**
     *  java 调用 Python 测试
     *
     * Created by c.z on 2019/12/3. */
    public class JPythonDemo2 {
    
    
        public static void main(String[] args) throws IOException {
            Properties props = new Properties();
            props.put("python.console.encoding", "UTF-8");
            Properties preprops = System.getProperties();
            PythonInterpreter.initialize(preprops, props, new String[0]);
            String pyStr = FileUtils.readFileToString(new File( "E:\\tmp\\stu01.py"),"utf-8");
            PythonInterpreter pyInterp = new PythonInterpreter();
            pyInterp.exec(pyStr);
        }
    }

end